Improvement



successfully applied to all Hour-bolts.

` Itis the object'of my invention to feed iour or meal into a,bolting-reel, at regular intervals, andin uniform gleiten gisten @anniffirr.;

WILLIAM COCHRAN E, OF SPRINGFIELD, 'OHIO-i.,

' Leners Farm No. 60,860, dated .Imam 1, 11367.4

IMPROVEMENT IN- FLOUB-BOLTS.

@its .Simms matriz tu in. ttm ettzr's @mutant mitinffygurt nt tht 'smut`TO ALL' `WHOM IT MAY CONERN: A' y v Be it known that I, WILLIAMIF.COGHRANE, of. Springfield, in the county of Clark, and State of- Ohio,-

have invented a newvand useful method of' Feeding Meal to theBolting-Reels of filpurin-gflllillsfofvrhichl the following is a full,clear, and lexact description, reference being had to the accompanyingdrawings, which l make part .of this specification, and in whichl Figure1 represents aside view of a bolting-reel, to which my improvement isapplied.

Figure represents an end view of the same. i i

'Figure 3 representsa vertical longitudinal section through the same, atthe line z' :slof iig. 2.

l Figure 4 is aj section at l(he line y y of iig.l I.

Figure 5 is a similar section atv the line z z of iig. I. Figure-,6 isan end view of the pump barrel; and I Figure 7, a section through theAsame at the line o o of iig. 1.

In ouring-mills, as generally constructed, the meal is fed to thebolting-reels by gravity alone; when so fed the feed is irregular,` asthe meal packs, at times,`and ysuspends the feed, and again descends inquantities too great for the reel to bolt at once.

In a former patent I have endeavoredto obviate this didiculty, in a boltin which a blast was employed to force the flour through the meshes ofthe bolt by the use of a pump, but that invention could not, I found, be

quantities. l l t y t In the accompanying drawings, which exemplifyoneoonveuient mode of carrying out the objects of my invention, 'abolting-reel,A, of proper construction, is shown as supported in a stoutframe, B. Afeed-spout,

C, leads from the cooling Ichamber or hopper-boy directly tb the barrelD'of thefeed Apump-which is arranged horizontally above thebolting-reel.` Aspeut, E,'1eads from one end of the-puuip barrel intoone end-cf the betting-reel. The reel is rotated in any suitable manner.A bevel-wheel, G, on one end of its shaft, earriesa corresponding pinionon a vertical-shaft, H, to which a pitman, I, is attached.A This pitmanvibrates the pumpr'od J, which slides longitudinally, in properbearings, in the frame. The piston-rod slides through a collar, z',.

attached to the pitman, and can be heldin any desired position bycollars, z", provided with set-screws to clamp the collars on the rod,which is by this means left free to be moved longitudinally or axiallytoregulate the stroke of the pump, and .yet chu be fixed whendesired. Thepiston K-slides in its barrel D, which it ts snugly. The piston-rod .Iscrews int'o it, so as to vary the position relatively to thefeed-spout. It is essential to the proper working of the pump that thepiston should woi'k air-tight in the barrel. v -Wood is the host, theches-pest, and the most generally employed material, but it is liable toshrink and workloose, and thus permit `the escape'of airf To obviatethis defect, I surround the piston K, ou three sides,witlipacking-blocks, k,A sliding in boxes, Z, and pressed upon thepiston, by springs, m, thus at' all times maintaining their respective'surfaces in contact with the piston, and compensating for any wear orshrinkage of the parts. To render the I .packing still more perfect, Ipack 'wool around the head of the pistoufarthest from the flour, andalsoinsert a washer, n, of leather between the head of the barrel andits cover, which is held on by screws which can be.

screwed up as -'occasion requires. '.lhe reel-spout E is closed at t'opby a. lid or valve, E', which can be opened when it is desired toven-tilate the reel by allowing cool air to enter it, (See iig. 3.)

In operation; thelmeal passes from'the hopper-boy or cooling chamberthrough the spout .G,'into thevbarrel D ofthe pump, wherethe forwardstroke of the piston K pushes it towards the reel-spout Part ofthe mealthus shoved forward passes through th sput into the bolting-reel'A,while apart remains packed in the barrel, at d. thus closing that end. IOu the back stroke of. the piston a partial vacuum iscreated' by thewithdrawal of the piston, as the barrel ispacked by the meal, asv aboveexplained,l and the only other entrancey is through the feed-spout C;Athe pressure of the atmosphere is therefore exerted upon .the meal-inthe spout, and bids the'gravity'in feeding the ilor to the extent 'ofthe vacuum thus created. This I have found .a great assistance inpreventing 'the packing of the meal. At each stroke of Athe piston thepreceding charge is displaced, and the last on-ctakes its place. Byscrewing the rod J into the piston, the latter can be made to.

como

` advance a quarter/or less dista/nce v*towards the reel spout, on itsforward stroke, and thus increase -or diminish the area of the mouthofthefeedspout, which correspondingly regulates the 'amount of meal fed tothe reel.

By the above description it will'be' seen that'a regulated and uniformvquantity of Ameal is Aat regular intervals injected into the reel by apositive motion. This mode ofV feeding -I'deem of the greatest utility,as I'ha-ve found in practice that the same set of reels will'holtmuchmore meal in a. given time, when fed by my pump, tha'uwhen fed bytheold process, and'produ'ce' our of more uniform grade. The puinp isdriven from the reel-shaft, and is thrown into or out -oi'- gear by-a.sliding clutch on the crank-shaft, or some other well known -way. Bythese' means I can stop or start the pump while th reel is workingwithout a'ecting its' mo've-l ment. When the lid E( is closed the mealis pumped through the reel with the air, which descends with it;

but when the lid is closed the ,air passes up through the'reel andescapes et the top'of the spout, its place being supplied by coel airfrom below. I

What I claim as my invention, and desire to secure by Letters Patent,is- A 'A l 1. The combination, with the reel, reel-spout, 'and pump, ofthe Ventilating valve E', as and for the purpose described. i

v 2. The arrangement of the feed-spout, pump barrel, packed piston, andreel-spout, with relation to each 'other and lto the reel, as and forthe purpose described. y y

The combination, with tne feed-spout and'pump barrel, of a flour pump,of the piston packing-blocks,

spring bonesfand woollen packing, as and forthe 'pui-pose described.

l In testimony whereof I have hereunto subscribed my name. l v W. F.COCHRAQNE.

Witnesses: Y l

EDM. F. BnoWN, J.' I." Pmox.

